commit cc80247f16ce83271e5c2043307dc65c8bb4bbf7
author Yunqing Wang <yunqingwang@google.com> Thu Dec 27 13:48:17 2012 -0800
committer Yunqing Wang <yunqingwang@google.com> Thu Dec 27 14:09:30 2012 -0800
tree 3c754cb665a552b98367ac115606004740cef018
parent 89ac94f8fb7be1ce9baee198954a890941ecf936

Switch the order of calculating 2-D inverse transform

The 2-D inverse transform X = M1*Z*Transposed_M2 was calculated
in 2 steps from left to right:
1. Vertical transform: Y = M1*Z
2. Horizontal transform: X= Y*Transposed_M2
In SIMD, a transpose is needed in vertical transform.

Here, switched the calculation order to do it from right to left.
In this way, we could eliminate that transpose by writing the
intermediate results out to their transposed positions.

Change-Id: I34dfe5eb01292f6e363712420d99475e2e81e12c